Combined supporting framework and filter housings of a multiple stage air filtering system



FIG. 1 is a perspective view taken from the front and right end of a combined supporting framework and filter housings of a multiple stage air filtering system embodying my new design;

FIG. 2 is a perspective view taken from the front and left end thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right end elevational view thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a top plan view thereof;

The broken line representation of a blower, connecting tubes, electrical controls, wiring and casters in FIG. 1 are for purposes of illustration only. 

The ornamental design for a combined supporting framework and filter housings of a multiple stage air filtering system, as shown and described. 